Walker speed

Discussion in 'Mechanic and Repair' started by mowaman, Aug 14, 2009.

  1. mowaman

    mowaman LawnSite Member
    Messages: 4

    Is it possible to increase the max speed of a walker and how. we currently use an old scag catcher model, but they no longer manafature one so have to change to a walker but they are so much slower in ground speed, help appreciated. Cheers Chris:confused:
  2. fixer67

    fixer67 LawnSite Silver Member
    Messages: 2,098

    No>you do not want to do that. You will over speed the pumps and burn them out. Walker even printed a notice about over speeding the pumps. Walker did make a speed up kit only to learn the pumps were being damaged.
    Walker service technician
  3. Restrorob

    Restrorob LawnSite Fanatic
    Messages: 11,029

    Hey fixer..... Do you get some kind of instant notification when someone uses "Walker" in a thread title ? :laugh:
  4. fixer67

    fixer67 LawnSite Silver Member
    Messages: 2,098

    I did not even notice the time stamp until I read your post. That is funny.
  5. Restrorob

    Restrorob LawnSite Fanatic
    Messages: 11,029

    Especially since you rarely drop in..... :confused:
  6. mowaman

    mowaman LawnSite Member
    Messages: 4

    so whats the soloution ?
  7. fixer67

    fixer67 LawnSite Silver Member
    Messages: 2,098

    First off what model and year are we talking about here. There is a upgrade kit that runs the pumps at there limit that is on all new machines. You have to remove the engine to mount the new pulley on the engine. It will be Monday before I can get the kit number for you. If you already have the upgrade on your machine then that is it unless you have pumps problems or the forward controls stop is out of adjustment.
  8. tomo

    tomo LawnSite Senior Member
    Messages: 660

    hi ,
    If u have a MT or MD this advice applies to u

    AFTER u have fitted the factory speed up kit
    [make sure u have the upgraded kit not the ealier version ]
    [later kit gives better belt wrap = less slip ]


    [jack shaft to engine pulley v belt]
    {u can order from walker ,it was included in ealier speed up kits ]

    ALSO Fit all upgraded tension arms
    Fit upgraded tension arm pivot bearings DU Type

    Once all installed all ,u will need is a Tacho

    photo tacho non contact [infared beam reflects on the reflective tape ]

    Adjust your engine to absoute max of specification 4 your engine
    [adjust once engine has reached operating temp ]

    Once u have done this as above
    CHECK pulley speed that is bolted to hydro

    Absolute max 3600rpm Input shaft/pulley speed

    The 3600 rpm spec is from the -- ""Eaton Model 7 transmission manual ""--

    Eg Md walker all new pulleys belts etc 3540 rpm at hydro with engine adjusted to max specification

  9. mowaman

    mowaman LawnSite Member
    Messages: 4

    Thanks for that.
    Cheers Chris
  10. Jason Rose

    Jason Rose LawnSite Fanatic
    Messages: 5,858

    Yes, Walker offers a speed-up kit. They have for years. It ups the speed from about 5 mph to 6 to 6.5 top speed. It dosn't sound like much, but it is.

    On my '08 MT machine I actually only needed to replace the pulley with the smaller diameter one, this is NOT the pulley on the engine. It's a 5 minute swap. The spring that was included was not needed as the tension on the belt with the old spring was sufficient. I actually couldn't even stretch the new shorter spring to fit, which is why I didn't use it.

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